Oracle-L: RE: Explain: In List Iterator

From: Freeman, Robert <Robert_Freeman_at_csx.com>
Date: Tue, 09 Apr 2002 13:26:06 -0800
Message-ID: <F001.0043FFA9.20020409132606@fatcity.com>

The INLIST INTERATOR takes a result set, and "interates" over that result set returning a result set that matches the values of the IN predicate.

This is documented, quite well, in the Oracle9i Documentation.

-----Original Message-----
Sent: Tuesday, April 09, 2002 5:11 PM
To: Multiple recipients of list ORACLE-L

Hi, list.
I'm trying to find out what's eating my system. I found the query, and explain'ed it. I've never seen an "in list iterator" before. Can anyone tell me what that is???

Thanks!!

Barb

Execution Plan

0 SELECT STATEMENT Optimizer=CHOOSE (Cost=2398 Card=25814 Bytes=9964204)

1 0 SORT (UNIQUE) (Cost=2398 Card=25814 Bytes=9964204)

   2    1     MERGE JOIN (CARTESIAN) (Cost=969 Card=25814 Bytes=9964204)
   3    2       NESTED LOOPS (OUTER) (Cost=1 Card=1 Bytes=380)
   4    3         NESTED LOOPS (Cost=8 Card=1 Bytes=324)
   5    4           INLIST ITERATOR (CONCATENATED)
   6    5             TABLE ACCESS (BY INDEX ROWID) OF 'AD' (Cost=1590
Card=145 Bytes=20300)
   7    6               BITMAP CONVERSION (TO ROWIDS)
   8    7                 BITMAP CONVERSION (FROM ROWIDS)
   9    8                   INDEX (RANGE SCAN) OF 'I_AD2' (NON-UNIQUE)
  10    4           TABLE ACCESS (BY INDEX ROWID) OF 'PUB' (Cost=1 Card=3600
Bytes=662400)
  11   10             INDEX (UNIQUE SCAN) OF 'I_PUB1' (UNIQUE)
  12    3         TABLE ACCESS (BY INDEX ROWID) OF 'INVROWS' (Cost=1
Card=627725 Bytes=35152600)
  13   12           INDEX (RANGE SCAN) OF 'I_INVR1' (NON-UNIQUE) (Cost =1
Card=627725)
  14    2       SORT (JOIN) (Cost=968 Card=25814 Bytes=154884)
  15   14         TABLE ACCESS (FULL) OF 'CUSTOMER' (Cost=968 Card=25814

Bytes=154884)

SELECT DISTINCT a.serieno, p.paper, p.adno, p.pubno, p.class, p.xsize, p.ysize,
p.state, trunc(p.mdate) mdate, p.vno, a.unet, trunc(a.rdate) rdate, trunc(a.startdate) startdate, trunc(a.enddate) enddate, a.ratecode, a.cus4name,
a.cus2no, i.dcode, i.ino FROM arcdb.ad a, arcdb.pub p, arcdb.invrows i, advdb.customer c WHERE p.adno = a.adno AND p.vno = a.vno AND p.adno = i.adno(+)
AND p.vno = i.vno(+) AND p.pubno = i.pubno(+) AND a.serieno IN (7,8,24,31,33,39,52,58,60,63,137,144,419,434,440,444,445,451,463) AND p.paper =
'DNA' AND p.state IN ('NOT', 'VAR') AND p.adno > 0 AND p.pubno = 1 AND p.vnoflag
= 'Y'AND c.cgrno = 'TT' AND trunc(a.rdate) BETWEEN to_date('01-MAR-02', 'DD-MON-YY') AND to_date('07-MAR-02', 'DD-MON-YY')

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--

Author: Baker, Barbara
INET: bbaker_at_denvernewspaperagency.com

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Author: Freeman, Robert
INET: Robert_Freeman_at_csx.com

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